Section 07 ENGINE MANAGEMENT (DI)
Subsection 03 (DIAGNOSTIC PROCEDURES)
FAULT
CODE
DIAGNOSED
COMPONENT/
SENSOR/CIRCUIT
ECU
INTERNAL
NAME
FAULT
DETECTED
FAULT
DETECTED
WHILE ENGINE
RUNNING
FAULT
DETECTED
WHILE ENGINE
NOT RUNNING
NORMAL
OPERATION
RESUMES IF
FAULT REMOVED
AND...
P0335 Encoder (CPS) Encoder
Wrong pattern
sensed
Yes No Return to idle
Possible causes:
Damaged sensor, damaged circuit wires, damaged connector, damaged ECU pins. ECU failure. Damaged tooth wheel. Check correct
rectifier regulator operation.
Service action:
Check for 12 volts on pin 5 and 5 volts on 6 and 0 volts on pin 4 of encoder harness connector. Check system circuits 2-6, 2-7, 2-14.
P0120 TPS, PTO TPI_1
Sensor out of
range
Yes No Return to idle
Possible causes:
Damaged sensor, damaged circuit wires, damaged connector, damaged ECU pins, ECU failure, damaged or out of alignment throttle
bodies or sensor.
Service action:
Check for 5 volts on pin 1 and 0-0.5 volts on pin 3 and 0 volts on pin 2. Check system circuits 4-1, 4-2, 4-18. Check with throttle closed
the resistance between 1 and 2 is 2000 ohms and between 2 and 3 is 1000 ohms and between 1 and 3 2500 ohms. Check for linear
resistance rise when opening throttles. Check physical stops for wear.
P0220 TPS, MAG TPI_2
Sensor out of
range
Yes No Return to idle
Possible causes:
Damaged sensor, damaged circuit wires, damaged connector, damaged ECU pins, ECU failure, damaged or out of alignment throttle
bodies or sensor.
Service action:
Check for 5 volts on pin 1 and 4.75-5.0 volts on 3 and 0 volts on pin 2. Check system circuits 3-5, 3-10, 3-14. Check with throttle closed
the resistance between 1 and 2 is 2500 ohms and between 2 and 3 is 2500 ohms and between 1 and 3 1200 ohms. Check for linear
resistance rise when opening throttles. Check physical stops for wear.
P1102 TPS, PTO TPI_1_ADAP
Throttle position
adaption failure
Yes No
Full reset. Key
off and on
Possible causes:
No initialization after throttle body or ECU changes throttle idle. Stop drifted.
Service action:
Check cable adjustment. Check Idle stop for wear. Check throttle angles at idle.
P1103 TPS, MAG TPI_2_ADAP
Throttle position
adaption failure
Yes No
Full reset. Key
off and on
Possible causes:
No initialization after throttle body or ECU changes throttle idle. Stop drifted.
Service action:
Check cable adjustment. Check Idle stop for wear. Check throttle angles at idle.
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